David Howells put in quite a bit of work on a script,./scripts/syscall-manage.pl, to simplify the entire process of changing thesystem call tables. With this script, it was a simple matter to add, remove,rename or renumber any system call you liked. The script also would resolvegitconflicts, in the event that two repositories renumbered the system calls inconflicting ways.

Source: LXer – Another Episode of “Seems Perfectly Feasible and Then Dies”–Script to Simplify the Process of Changing System Call Tables